INDEX. 



191 



Fat analysis, saponification (Koettstorfer) number, 

 Soluble fatty acids, .... 



Synopsis of composition, oils and fats, 

 Unsaponifiable matter. 

 Feed and dairy section, work, . 



Cows, testing pure-bred, for advanced registry. 

 Dairy law, ..... 



Feeding stuffs law, .... 



Milk, cream and feeds, free examination, 

 Miscellaneous work. 

 Feed control account, .... 



Feeding the young calf, directions, . 

 Feeds, free examination, .... 



Fertilizer experiment, asparagus, 

 Fertilizer law account, .... 



Fertilizer section, work, .... 



Fertilizers collected and analyzed. 

 Fertilizers registered. 

 Miscellaneous activities, . 

 Vegetation tests, .... 



Fertilizers for corn, comparison, 

 History of experiment. 

 Yield of corn in 1915, 

 Glycerides of soluble fatty acids. 

 Hay, yields obtained by different top-dressings, 

 Horticultural department, investigations in progress, 

 Hydrogen ion concentration of media, relation to the proteolytic activity of 

 Bacillus subtilis, 

 General methods of procedure, . 

 Choice of methods, 



Hydrogen ion concentration in culture media, determination 

 Proteolysis, quantitative determination, 

 Culture media, acclimatization. 

 Inoculation, .... 



Media, preparation. 



Different hydrogen ion concentration. 

 Selection, steps. 

 Importance of problem. 



Investigations, previous, review. 

 Questions involved, .... 



Diagrammatical representation, 

 Results, determination of: — 

 Character of the proteolysis, . 

 Endo- or exo-enzymatic nature of enzymes, 

 Hydrogen ion concentration as growth progressed 

 Rate of growth, .... 



Rate of proteolysis. 

 Vitality of the organism (B. subtilin). 

 Hydrogen ion concentration, proteolysis of Streptococcus erysipelatis and 

 Streptococcus lacticus, compared. 

 General methods of procedure, . 



Determination of hydrogen ion concentration as growth progressed 

 Medium, ...... 



Organisms employed in the investigation. 

 Rate of growth, , . 



Rate of proteolysis, . . . , 



Summary and conclusions, 



PAGE 



95 

 106 



94 

 134 

 56a 

 60a 

 57a 

 56a 

 60o 

 61a 



6a 



62 

 6pa 

 17a 



5a 

 53o 

 54a 

 54a 

 55a 

 55o 

 41a 

 41a 

 41a 

 106 

 43a 

 29o 



139 

 145 

 145 

 145 

 152 

 166 

 167 

 155 

 161 

 155 

 139 

 141- 

 143 

 144 



174 

 175 

 172 

 168 

 169 

 167 



178 

 178 

 183 

 178 

 178 

 180 

 181 

 184 



